Intestinal hemangiomas causing severe chronic gastrointestinal bleeding.
D000293:Adolescent; D000747:Anemia, Hypochromic / Q000209:etiology; D006471:Gastrointestinal Hemorrhage / Q000209:etiology*; D006391:Hemangioma / Q000150:complications* / Q000601:surgery; D006801:Humans; D007414:Intestinal Neoplasms / Q000150:complications* / Q000601:surgery; D008297:Male; D008551:Melena / Q000209:etiology